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LP2981IM5X-4.7 from NS,National Semiconductor

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LP2981IM5X-4.7

Manufacturer: NS

Micropower 100 mA Ultra Low-Dropout Regulator in SOT-23 and micro SMD Packages

Partnumber Manufacturer Quantity Availability
LP2981IM5X-4.7,LP2981IM5X47 NS 15000 In Stock

Description and Introduction

Micropower 100 mA Ultra Low-Dropout Regulator in SOT-23 and micro SMD Packages The LP2981IM5X-4.7 is a low-dropout (LDO) voltage regulator manufactured by National Semiconductor (NS). Here are its key specifications, descriptions, and features:

### **Specifications:**
- **Output Voltage:** 4.7V (fixed)  
- **Output Current:** 100mA (maximum)  
- **Dropout Voltage:** 300mV (typical at 100mA load)  
- **Input Voltage Range:** Up to 16V  
- **Quiescent Current:** 75µA (typical)  
- **Line Regulation:** 0.02%/V (typical)  
- **Load Regulation:** 0.05%/mA (typical)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** SOT-23-5  

### **Descriptions:**
- The LP2981IM5X-4.7 is a precision LDO regulator designed for battery-powered applications.  
- It provides a stable 4.7V output with low noise and high PSRR (Power Supply Rejection Ratio).  
- Includes built-in protection features such as thermal shutdown and current limiting.  

### **Features:**
- **Low Dropout Voltage:** Ensures efficient operation with minimal headroom.  
- **Low Quiescent Current:** Ideal for battery-operated devices.  
- **Thermal Shutdown Protection:** Prevents damage from overheating.  
- **Current Limit Protection:** Safeguards against excessive load currents.  
- **Stable with Low-ESR Capacitors:** Works with ceramic capacitors (≥1µF).  
- **High PSRR:** Reduces noise in sensitive applications.  

This regulator is commonly used in portable electronics, instrumentation, and power-sensitive systems.

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